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<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
  <video preload="auto" controls poster="http://www.gravatar.com/avatar/5f57ad1c5f070528c87ecc1b0a46a5e9">
    <source src="rabbit.ogg" type="video/ogg">
    <source src="rabbit.mp4" type="video/mp4">
  </video>
</body>
</html>
